Results 21 to 30 of about 11,697,937 (221)

Investigation of the Fundamental Plane Relationship For the Evolution of the Elliptical and Lenticular Galaxies [PDF]

مجلة التربية والعلم
The Fundamental Plane relates the effective radius and surface brightness of an early-type galaxy to its velocity dispersion. It is important in understanding galaxy formation and evolution processes. The present work aims to investigate this relation as
Khalid Mohammed
doaj   +1 more source

A search for the most massive galaxies: double trouble? [PDF]

, 2005
We describe the results of a search for galaxies with large ({approx}> 350 kms{sup -1}) velocity dispersions. The largest systems we have found appear to be the extremes of the early-type galaxy population: compared to other galaxies with similar ...
York, D. G., Bernardi, Mariangela, Miller, C. J., Sheth, R., Subbarao, M., Schlegel, D., Brinkmann, J., Schneider, D. P., York, D., Schneider, D., Sheth, R. K., Miller, C., Bernardi, M., Nichol, Bob, Frieman, J., Nichol, R. C.   +15 more
core   +1 more source

Two Candidates for Dual AGN in Dwarf-dwarf Galaxy Mergers

The Astrophysical Journal, 2023
Dual active galactic nuclei (DAGN) are important for understanding galaxy-merger-triggered fueling of black holes and the hierarchical growth of structures.
Marko Mićić, Olivia J. Holmes, Brenna N. Wells, Jimmy A. Irwin   +3 more
doaj   +1 more source

Hot Gaseous Halos in Early Type Galaxies

Galaxies, 2017
The hot gas in early type galaxies (ETGs) plays a crucial role in their formation and evolution. As the hot gas is often extended to the outskirts beyond the optical size, the large scale structural features identified by Chandra (including cavities ...
Dong-Woo Kim
doaj   +1 more source

Morphological Distribution of Galaxies in Some Nearby Clusters

Open Astronomy, 2019
We study the morphological distribution of galaxies in some nearby clusters, using the Sloan Digital Sky Survey – Data Release 9 (SDSS-DR9). The segregation between early-type galaxies and late-type ones is investigated in g – r / u – g color space ...
Rasheed Mariwan A., Mohammad Khalid K.
doaj   +1 more source

Age-density relation of Main galaxies at fixed parameters or for different galaxy families

Open Physics, 2015
Using two volume-limited Main galaxy samples of the Sloan Digital Sky Survey Data Release 10 (SDSS DR10), we examine the environmental dependence of galaxy age at fixed parameters or for different galaxy families.
Deng Xin-Fa, Song Jun, Chen Yi-Qing, Jiang Peng, Ding Ying-Ping   +4 more
doaj   +1 more source

CLEAR: Survey Overview, Data Analysis, and Products

The Astrophysical Journal Supplement Series, 2023
We present an overview of the CANDELS Ly α Emission At Reionization (CLEAR) survey. CLEAR is a 130 orbit program of the Hubble Space Telescope using the Wide Field Camera 3 (WFC3) IR G102 grism.
Raymond C. Simons, Casey Papovich, Ivelina G. Momcheva, Gabriel Brammer, Vicente Estrada-Carpenter, Steven L. Finkelstein, Catherine M. Gosmeyer, Jasleen Matharu, Jonathan R. Trump, Bren E. Backhaus, Yingjie Cheng, Nikko J. Cleri, Henry C. Ferguson, Kristian Finlator, Mauro Giavalisco, Zhiyuan Ji, Intae Jung, Jennifer M. Lotz, Rosalia O’Brien, Rosalind E. Skelton, Vithal Tilvi, Benjamin Weiner   +21 more
doaj   +1 more source

Galaxy Zoo:dust in spiral galaxies [PDF]

, 2010
We investigate the effect of dust on spiral galaxies by measuring the inclination dependence of optical colours for 24 276 well-resolved Sloan Digital Sky Survey (SDSS) galaxies visually classified via the Galaxy Zoo project.
Masters, Karen L., Murray, P, Bamford, S, Slosar, Anze, Thomas, Daniel Georg, Vandenberg, J, Keel, WC, Bamford, Steven, Szalay, Alexander S., Mosleh, Moein, Andreescu, Dan, Bamford, Steven P., Andreescu, D, Thomas, Daniel, Thomas, D, Nichol, Robert, Nichol, R, Edmondson, Edward M., Vandenberg, Jan, Murray, Phil, Lintott, Chris J., Schawinski, Kevin, Masters, KL, Schawinski, K, Raddick, MJ, Keel, William C., Szalay, AS, Mosleh, M, Edmondson, EM, Slosar, A, Lintott, CJ, Raddick, M. Jordan, Nichol, Robert C., Masters, Karen   +33 more
core   +1 more source

The Initial Mass Function and Other Stellar Properties Across the Core of the Hydra I Cluster

The Astrophysical Journal, 2023
The Hydra I cluster offers an excellent opportunity to study and compare the relic old stellar populations in the core of its two brightest galaxies. In addition, the differing kinematics of the two galaxies allows a test of the local validity of general
Ilaria Lonoce, W. L. Freedman, A. Feldmeier-Krause   +2 more
doaj   +1 more source

Probing the effect of the protocluster environment on galaxy morphology at z = 2.23

Astronomy & Astrophysics
Context. As galaxies evolve in dense cluster and protocluster environments, they interact and quench their star formation. This gradually transforms the dominant galaxy population from star-forming galaxies to quiescent red galaxies.
Golden-Marx E., Cai Z., Shi D., Wang X., Lemaux B. C., Vulcani B., Häußler B., Renard P., Shen L., Giddings F.   +9 more
doaj   +1 more source